linux/drivers/media/common
Arnd Bergmann 3f65c6f67e media: v4l2: allocate v4l2_clip objects early
The v4l2_format based ioctls can have an indirect pointer to an array
of v4l2_clip structures for overlay mode, depending on the 'type' member.
There are only five drivers that use the overlay mode and copy the
data through the __user pointer.

Change the five drivers to use memcpy() instead, and copy the data
in common code using the check_array_args() helpers. This allows
for a subsequent patch that use the same mechanism for compat
ioctl handlers.

Note that there is another pointer for a 'bitmap' that is only
used in the 'vivid' driver and nowhere else. There is no easy
way to use the same trick without adding complexity to the
common code, so this remains a __user pointer.

[hverkuil: fix: CHECK: spaces preferred around that '*' (ctx:VxV)]
[hverkuil: fix: CHECK: Alignment should match open parenthesis]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-11-16 10:31:06 +01:00
..
b2c2 treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
saa7146 media: v4l2: allocate v4l2_clip objects early 2020-11-16 10:31:06 +01:00
siano media: siano: rename a duplicated card string 2020-10-02 14:25:12 +02:00
v4l2-tpg treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
videobuf2 Linux 5.9-rc7 2020-10-04 12:19:12 +02:00
btcx-risc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cx2341x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
cypress_firmware.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
cypress_firmware.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig media: dvb-usb: auto-select CYPRESS_FIRMWARE 2020-04-14 10:29:04 +02:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
tveeprom.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00